The SALTO KS app exists for both your Mobile and Smart Watch. 

The following devices are compatible for each: 

• Mobile App (SALTO KS App for the phone) works on Mobile Devices from Android Marshmallow (Android 6, SDK/API 23) and higher.

• Wear OS App (SALTO KS App for the watch) works on any smart watches running Wear OS. The smartphone needs to have Android version 8 or higher.

In order to use your Digital Key in your Wear OS smart watch, your phone need to have Android version 8 and higher with API 26.